English
РусскийInfluence of additives of EMIBF4 and BMIBF4 ionic liquids on the properties of network polymer electrolytes for lithium power sources
The effect of 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIBF4) and 1-butyl-3-methylimidazolium tetrafluoroborate (BMIBF4) ionic liquids on the properties of the polymer electrolyte based on polyethylene glycol diacrylate (PEG-DA) and LiBF4 salt was studied. Research was carried out by spray-mass spectroscopy, differential scanning calorimetry, and electrochemical impedance spectroscopy technique in the temperature range from -40 to 120 °C. The best polymer electrolyte composition is the ratio of PEG-DA: LiBF4: EMIBF4 = 1: 1: 6.5 mole with a conductivity of 2.55\cdot 10-3 S/cm at 20 °C, 2.20\cdot 10-4 S/cm at -40 °C and the glass transition temperature -103 °C.
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